AT4.0 CARBON

Ghost

3378 reviews
Rated 4.5 out of 5 stars
5 stars (2606)
4 stars (313)
3 stars (160)
2 stars (94)
1 star (205)
Out of stock
Specs & Description

Summoned back to the AT line-up the AT4.0 Ghost full face motorbike helmet is now being rocked as a base colourway on the new 4.0 line-up. The Ghost was a very attractive silhouette for our second-generation helmets and due to popular demand, the bold white paint coat with its glossy finish has been applied to the new AT4.0 motorcycle helmets giving you all the enhanced tech on the 4.0 shell in a fan-favourite fresh and clean colourway. The re-engineered AT4.0 with new cheek pads, headliner, climate and sound control is the perfect helmet to rock the Ghost colourway on. New tailor-made cheek pads composed of multi-density multi-layered foams housed in a sweat-wicking fabric for greater comfort and secure fit. The new RHEON™ headliner comes into action when your head experiences a linear impact or rotation forces applied to it. The RHEON™ will reduce these forces with the use of smart reactive polymers which have non-Newtonian fluid properties to absorb and dissipate the impact to further protect your head.

Helmet acoustics were something that our fans have brought up so we have now refined the shell and removed two of the top vents and added sound-dampening ear inserts which can be inserted into the helmet for quieter acoustics. With safety as a top priority in Ruroc's helmets, we are proud to announce that the AT4.0 is one of the first motorcycle helmets to ship with ECE 22.06 safety certifications and the helmet surpassed all the tests for the ECE 22.06 rating by at least 20%.

The AT4.0 is Ruroc's quietest motorcycle helmet ever but why not improve the functionality and entertainment and upgrade it to a Bluetooth motorcycle helmet with our Shockwave™ Bluetooth insert (sold separately). The AT Shockwave™ is easily installed with a seamless fit into the rear of your helmet. The AT Shockwave™ now has a 60% smaller mic and low-profile speakers that deliver high-quality audio with rich bass for 8 hours of playtime with a USB-C rechargeable battery.

The AT4.0 Ghost can be transformed and customised with our wide range of helmet visors. We offer 7 additional coloured visors that are easily changeable with our quick release thumbscrews. The helmet comes with a pre-installed clear visor for road use and a secondary tinted visor for track use only. All our visors are compatible with Pinlock® inserts that can easily be installed for anti-fog protection (available separately).

Delivery & Returns
  • Delivered via UPS TRACKED EXPRESS from our UK Headquarters
  • FLAT-RATE SHIPPING of A$59
  • Duties and taxes may apply
  • EASY EXCHANGES via our exchanges portal
  • EASY RETURNS via our returns portal
For orders over A$1,000 (including shipping), import GST, customs duty and clearance charges may apply and be payable via the carrier before delivery.
Helmet with DOT and ECE certification
DOT Certified
ECE 22.06 Certified

Seal of Approval.

AT4.0 CARBON is engineered for safety performance, exceeding ECE 22.06 requirements by a minimum of 20%, and carrying DOT approval and a SHARP 4-star rating.

Helmet interior padding

Ultimate Comfort

The fully re-engineered internals, including head-liner and cheek pads, take fit, comfort, acoustic control and support to a whole new level.

RHEON™ Protection

The world’s first road-ready motorcycle helmet to feature RHEON™ technology. Next-level protection seamlessly integrated into the AT4.0 head-liner.

Shockwave Bluetooth audio system
Bluetooth

Protection Meets Connection

AT4.0 CARBON is compatible with the Shockwave Bluetooth audio system. Featuring seamless helmet integration, the Harman Kardon designed and tuned unit delivers rich & crisp audio.

215 degree field of view

Maximum Vision

Featuring 215° horizontal and 100° vertical field of vision, the AT4.0 edge-to edge visor maximises peripheral vision. Anti-scratch dipped, Pinlock 70 compatible, and made from Optical Grade Ballistic Polycarbonate, this is vision reinforced.

Helmet ventilation system

Full Climate Control.

Take full control of your helmet environment with open/close vents & tune your thermal comfort in both warm and cool climates.

FAQs

How do I know what size AT4.0 CARBON motorcycle helmet to get?

Take a fabric measuring tape, wrap it around your head just above your eyebrows and ears. Pull the tape until comfortably tight. Take the measurement. Our motorcycle helmet fit is intermediate oval.

How tight should the AT4.0 CARBON motorcycle helmet be?

A helmet should feel snug, with even pressure around your crown and a firm cheek bite. Cheek pads bed in over time, so it shouldn't feel loose (or "perfect") straight away. There should be no helmet movement when turning from side to side. A snug fit is essential for safety.

Does carbon fiber perform better?

Carbon fiber delivers a perfect balance of light weight and superior impact absorbing characteristics, making it a great choice for motorcycle helmets.

What is RHEON™?

It's impact tech that hardens on crash impact, preventing injuries from linear and rotational impacts. Standard headliners can't do this. RHEON™ can.

What buckle does the AT4.0 CARBON motorcycle helmet use? Is it safe?

Fidlock. It's magnetic + mechanical. The magnet pulls the tab in. The mechanical lock holds it. To open, pull tab which will open the mechanism. Wind won't open it. Crashes won't open it. It's much quicker to use than a double D-ring and just as safe.

How do I clean the AT4.0 CARBON motorcycle helmet visor without scratching it?

Rinse the visor first, grit is the enemy. Use mild soap and a microfiber towel. Wipe off. For longlasting protection, order one of our Muc-Off Helmet Cleaning Kits.

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We recommend:
How to measure
  1. With a fabric measuring tape, wrap it around your head just above your eyebrows and ears.
  2. Pull the tape comfortably tight. Take the measurement.

Our motorcycle and snow helmet fit is an intermediate oval.

Returns policy

If the fit is not quite right our return process is simple. 14 days to exchange, picked up from home. See our returns page for more details.

Reviews for AT4.0 Carbon Range

All reviews are from verified customers

4.5 /5
3378 Reviews
Harold SmeltzerJune 4 2026
Great helmet with superior protection. Lighter than most other helmets.
De heer MPJK VAN DOORNJune 4 2026
Good fit high quality
Benjamin HolotaJune 4 2026
Désigne exceptionnel !
brandon morenJune 4 2026
Fits great and looks great. Best helmet I have ever bought. It's also a head turner people love the look of it.
Adin HensleyJune 1 2026
I love this helmet. I would recommend it to anybody. The shockwave system does have a couple bugs, though nothing too major.
WardukeJune 1 2026
Disagree helmet are our helmets if you get the proper size fit so well Pfizer is easy to change. The vents were great and snug around your head so when it’s chilly out, you stay good winds not whistling up under your helmet. They’re just great helmets plus they’re also the ECE instead of just the DOT.
Sammy KitchensJune 1 2026
It's a beautiful helmet. I love the graphics and everything. But the not very wind resistance. Its very noisy when going over sixty mph
Emmanuel Duque RodriguezJune 1 2026
Beautiful helmet, fast delivery and great packaging. I will definetly keep buying more for collection and personal use!
MarcoJune 1 2026
Awesome and comfortable
ElodieMay 31 2026
Parfait il me convient
Alexandre RenardMay 30 2026
Very very good
Jonathan HegdalMay 28 2026
Love this helmet, have received tons of compliments and the view angles are amazing.
Enrique jose Martin pastorMay 28 2026
Buenas presentaciones y seriedad
Matthew DalrympleMay 27 2026
Love the helmet! It's definitely an attention getter! And very comfortable to wear!
Christopher caddellMay 25 2026
Love it. A good looking helmet
Rainer Gabriel Martínez CascanMay 25 2026
Great product, beautiful design, it feels robust and protective. A 5 stars on the top.
Ponarosa TeresaMay 25 2026
Il casco e wow😍😍😍😍😍😍 bellissimo in tutti i dettagli
Dennis WiendlochaMay 25 2026
Wonderfull helmet
OSCAR ARRIETA CELAYAMay 25 2026
The helmet is of excellent quality, and the order processing service was of a notably high standard.
Alexandre CardonMay 22 2026
Good sound Perfect vocal captation, Harman Kardon is a luxury sound designer and he proving it once again